US179015A - Improvement in reversible knob-latches - Google Patents
Improvement in reversible knob-latches Download PDFInfo
- Publication number
- US179015A US179015A US179015DA US179015A US 179015 A US179015 A US 179015A US 179015D A US179015D A US 179015DA US 179015 A US179015 A US 179015A
- Authority
- US
- United States
- Prior art keywords
- latches
- knob
- improvement
- plate
- bolt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000002441 reversible Effects 0.000 title 2
- 238000006073 displacement reaction Methods 0.000 description 2
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B63/00—Locks or fastenings with special structural characteristics
- E05B63/04—Locks or fastenings with special structural characteristics for alternative use on the right-hand or left-hand side of wings
- E05B63/044—Locks or fastenings with special structural characteristics for alternative use on the right-hand or left-hand side of wings with reversible bolt or bolt head
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T292/00—Closure fasteners
- Y10T292/08—Bolts
- Y10T292/1097—Reversible
- Y10T292/1098—Cam and lever operating means
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
Description
W. M. GRISCOM.
REVERSIBLE KNOB LATCHES. 179.015.
Patented June 20 N. PETERS, PHOTO-LITHOGRAFHER, WASHINGTON, D. C,
U ITED STATES PATENT OFrIoE.
WILLIAM M. GRISOOM, OF READING, PENNSYLVANIA..
I'MPROVEIVlENT IN REVERSIBLE KNOB -LATCHES.
Specification forming part of Letters Patent No. [79,015, dated June 20, 1876 application filed May 25, 1876.
To all whom it may concern:
Be it known that I, WILLIAM M. GRIsooM, of Reading, Pennsylvania, have invented an Improvement in Latch-Locks, of which the following is a specification:
The object of my invention is to so construct a latch-lock that, while considerable resistance is presented to the retraction of the latch-bolt by means of the knob, said bolt may be moved inward by a very slight pressure applied to its end. This object I attain in the following manbeing connected to the inner end of the plate 0, which is ordinarily secured to the stem of the latch-bolt. Against the short arm of the bell-crank lever d bears the inner end of a spring, f, the opposite end ot' which. is secured between lugs on the lock-case, the spring tending to resist the movement of the lever caused by turning the knob to retract the bolt.
The stem 9 of the bolt, instead of being connected directly to the end of the plate 6, as usual, passes through an opening in a lug, h, at the end of the said plate, and has a head at the inner end to prevent its withdrawal, a slot, 6, in the plate, however, permitting the the latchwill operate readily upon the closing of the door; but the desired efl'ect is required to retract it by turning the knob, while, owing to the fact that the spring 12 is confined between the head m of the bolt and the lug h on the plate 0, the removal of the bolt from the control of the casing in order to reverseit may be efi'ectedwithout risking the displacement of the spring, thereby overcoming an objection to looks in which the latch-spring is separate from the bolt and plate. v
I do not desire to claim, broadly, a springlatch which can be moved inwardly independently of the knob mechanism; but
I claim as my invention- The combination of the lever d and plate 0 with the latch on and its spring 19, carried by said plate 6, but so arranged that the latch is capable of moving inwardly independently of the plate, as set forth.
In testimony whereof I have signed myname to tli'is specification in the presence of two subscribing witnesses.
W LLIAM M. GRISOOM.
Witnesses: 4 F. B. RULER, F. M. BANKS.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US179015A true US179015A (en) | 1876-06-20 |
Family
ID=2248422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US179015D Expired - Lifetime US179015A (en) | Improvement in reversible knob-latches |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US179015A (en) |
-
0
- US US179015D patent/US179015A/en not_active Expired - Lifetime
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